diff --git a/.github/workflows/scis_invoice_calculator.yml b/.github/workflows/scis_invoice_calculator.yml
index 49a5ae3..140bc2f 100644
--- a/.github/workflows/scis_invoice_calculator.yml
+++ b/.github/workflows/scis_invoice_calculator.yml
@@ -30,4 +30,9 @@ jobs:
           SGEC_SERVICE_SHAREPOINT_ID: ${{ secrets.SGEC_SERVICE_SHAREPOINT_ID }}
           SHAREPOINT_CLIENT_ID: ${{ secrets.SHAREPOINT_CLIENT_ID }}
           SHAREPOINT_CLIENT_SECRET: ${{ secrets.SHAREPOINT_CLIENT_SECRET }}
-          SHAREPOINT_TENANT_ID: ${{ secrets.SHAREPOINT_TENANT_ID }}
\ No newline at end of file
+          SHAREPOINT_TENANT_ID: ${{ secrets.SHAREPOINT_TENANT_ID }}
+      - name: Upload Excel file
+        uses: actions/upload-artifact@v4
+        with:
+          name: my-excel-file
+          path: survey_data.xlsx
\ No newline at end of file
diff --git a/etl/transform/types.py b/etl/transform/types.py
index cefb894..896fc4f 100644
--- a/etl/transform/types.py
+++ b/etl/transform/types.py
@@ -24,12 +24,12 @@ class CompanyInfo(BaseModel):
 class SurverySummaryInfo(BaseModel):
     reference_number: str
     epc_language: str
-    uprn: str
+    uprn: Optional[str] = ""
     postcode: str
     region: str
     address: str
     town: str
-    county: Optional[str] = None
+    county: Optional[str] = ""
     property_tenure: str
     transaction_type: str
     inspection_date: datetime